US Patent: 2,136,301
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Dynamo-electric machine
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Patent Dates:
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Applied: |
Aug. 10, 1937 |
Granted: |
Nov. 08, 1938 |
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Jeff Joslin Vintage Machinery entry for Universal Electric Co.
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Description: |
"An object of the invention is to provide a motor in the operation of which the usual noise produced by shaft rattle or shaft vibration is removed or materially reduced. The type of motor with which the invention is immediately concerned is of the direct current six-volt fractional horsepower type commonly used to operate the fans of heaters for automobiles..." |
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